. >>> let's go to pete williams who is live in washington. pete, what are you hearing about the investigation to the bombings in boston? >> right. it's all about putting pieces of puzzles together. first of all, the devices themselves are here in the suburban washington in the fbi's crime lab where they will try to reinstruct them. they believe they were carried to the scene in black nylon duffel bags and say that because of the weight that each device probably weighed 20 pounds filled with gun powder and shrapnel and in pressure cookers. you can see the brand name of the pressure cookers in a couple of the pictures that we have obtained. the second part of it is the pictures themselves that they are asking people to send in and they are getting a huge amount, so far, three terra bytes of data that is thousands of hours of video and still pictures. they want more. this is from our affiliate in boston. it shows in the first picture what appears to be a trash bag next to the green thing is a trash container and looking at whether the bombs migh